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Magnetic anisotropy of ferromagnetic layered manganites

By J.-P. Renard and M. Velázquez

Abstract

The magnetic anisotropy of the ferromagnetic layered manganites La $_{2-2x}{\rm Sr}_{1+2x}{\rm Mn}_2{\rm O}_7$ is investigated. For x=0.4, the easy-plane anisotropy comes out predominantly from dipolar interaction but it is partly cancelled out by a significant uniaxial magnetocrystalline anisotropy. This latter one is discussed on the basis of a simple single ion model and compared to existing experimental data in ferromagnetic manganites. Copyright Springer-Verlag Berlin/Heidelberg 2003

DOI identifier: 10.1140/epjb/e2003-00194-3
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